Fig. 8.

Effect of splanchnectomy on gap junctional coupling in chromaffin cells. A, Spontaneous EPSCs recorded in a control slice (top trace) and in a slice derived from a denervated gland (middle trace) and a contralateral gland (bottom trace). No synaptic activity was detected in the denervated tissue.B, Probability of LY spreading between chromaffin cells after a single cell injection. *p < 0.01 compared with values in adults. The number of recorded cells is indicated in parentheses. C, Extent of coupling estimated by the number of LY-stained chromaffin cells. Note that the increase in gap junction coupling in the denervated gland was accompanied by an increase in the extent of coupling.